CVE-2026-12814

MEDIUM 6.3

Comfast CF-WR631AX V3 API Endpoint mbox-config system os command injection

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

A flaw has been found in Comfast CF-WR631AX V3 up to 2.7.0.8. This issue affects the function system of the file /cgi-bin/mbox-config?section=ping_config of the component API Endpoint. This manipulation of the argument destination causes os command injection. The attack is possible to be carried out remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CWE	CWE-78 CWE-77
Vendor	comfast
Product	cf-wr631ax v3
Published	Jun 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

Comfast / CF-WR631AX V3

2.7.0.0 2.7.0.1 2.7.0.2 2.7.0.3 2.7.0.4 2.7.0.5 2.7.0.6 2.7.0.7 2.7.0.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/372608 vuldb.com: https://vuldb.com/vuln/372608/cti vuldb.com: https://vuldb.com/cve/CVE-2026-12814 vuldb.com: https://vuldb.com/submit/837561 github.com: https://github.com/0xcc12138/COMFAST-CF-WR631AX-Router-Backend-Command-Injection-RCE-Analysis-Report

Credits

🔍 0xcc12138 (VulDB User) VulDB CNA Team